Snap-fastener.



I. PFEIFFERQJR.

SNAP FASTENER.

APPLICATION FILED .IUNE I9, 19I6.

1 ,209,01 9. Patented Dec. 19, 1916.

EMANUEL m 33., 01'! BEDFOBD, MASSACHUSETTS.

SNAP-FASTENER.

Specification of Letters Patent. Patented )ec. 19, 1916.

Application filed .Tune 19, 1916. Serial No. 104,366.

To all whom it may concern:

Be it known that I, IMMAmJnL Prntrrnn, Jr., a citizen of the United States, residing at Bedtord, in the county of Middlesex and State of Massachusetts, have invented new and useful Improvements in Snap-Fasteners, of which the following is a specification.

This invention relates particularly to snap fasteners adapted for use on gloves, garments of various kinds, and for other purposes requiring a fastener of compact form and simple construction.

The invention is embodied in the improvements hereinafter described and claimed.

Of the accompanying drawings forming a part of this specification: Figure 1 represents a plan view of the blank from which the socket member of my improved fastener is formed; 2 represents a view of the inner side of the socket member formed from said blank; Fig. 3 represents a section on line 33 of Fig. 2, and an edge view of the stud member engaged with the socket member; Fig. 4 represents a view of the outer side of the socket member.

The drawings, if understood to represent a glove fastener or the like, are on a considerably enlarged scale.

The same reference characters indicate the same or similar parts in all the views.

The stud member may be of any suitable construction, and may be attached in any suitable way to the part of a glove, garment or other article by which it is carried. As here shown the stud member includes a post 12 of substantially cylindrical form, enlarged at its outer end to form a rounded head, and provided at its inner end with a base 13 adapted to be attached to a carrying part by stitches or otherwise.

The socket member includes a body portion 14, preferably of resilient sheet metal, provided with a central stud-receiving opening 15, and a plurality-of resilient S-shaped arms integral with the body portion and bent under the same, each arm including a shank portion 17, and a post-engaging terminalportion or jaw 16. The jaws are adapted to simultaneously engage the post 12 of the stud member, and are held in engagement therewith partly by their own resilience and partly by the resilience of the shank portions 17, said shank ortions being adapted to yield and permit bodily radial displacement of the jaws, and the jaws being adapted to be flexed at the abruptly bent neck portions 18 connecting the jaws with the shank portions. Each S-shaped arm therefore constitutes a double-acting spring maintained by the resilience of its two portions ineffective engagement-with the post 12.

The spring arms do not project through the opening 15, and do not overlap the outer side of the body portion, hence the smooth outer side of the body is unobstructed and presents a neat and desirable appearance, as shown'by Fig. 4. The shank portions 17 of the. double spring arms normally hold the jaws in close proximity to the body 14, and project inwardly from the margin of the opening 15. The jaws 16 are adapted to be displaced to a limited extent by the post in the direction indicated by the arrows (Fig. 3) when the post is moved in the same direction, and are supported by the body portion against strain tending to move the post in the opposite direction and withdraw it from the socket member.

The body portion may be of dished or concavo-convex form, as shown by Fig. 3, its inner side being concave and forming a recess which receives the jaws or the main portions thereof.

While any suitable number of arms and jaws may be employed, I preferto provide four, as shown, the jaws being arranged in two opposed pairs, as shown by Fig. 2.

It will now be seen that the jaws simultaneouslyengage the post of a stud member inserted in the opening 15, and, by reason of their freedom to yield to the advancing movement of the post, permit the members to be interengaged with-relative case. It will also be seen that the rigid support of the jaws by the body 14 necessitates greater force in withdrawing than in inserting the stud member, the spreading or opening of the jaws by a withdrawing movement of the which carries itiby stitches or otherwise.

. Said body, as well as the stud base 13, may

' tegral with said plate and extending from the periphery thereof, said arms being disposed wholly at one side of the plate and converging toward the axis of said perforation, the free-ends of said arms being normally adjacent the edge of said perforation and being arranged to permit passage between them of the head of a stud member extending through the perforation from the opposite side of the plate and to engage the head in such manner that said arms shall be braced, between their ends, by the plate when the stud member is being withdrawn.

2. The socket member of a snap fastener, consisting of a coneavo-convex plate having a central stud-receiving perforation, and resilient arms integral with said plate and extending from the periphery thereof, said arms being disposed wholly at the concave side of the plate and converging toward the axis of said perforation, the free ends of said arms being normally adjacent the edge of said perforation and being formed to afford a curved surface for engaging the head of a stud member, extending through said perforation from the convex side of the plate, in such manner that said arms will be braced between their ends by the plate when the stud member is being Withdrawn.

3. A socket member of a snap fastener, composed of a body having a central studreceiving opening, and a plurality of resilient S-shaped arms integral with the body, extending from the periphery thereof and disposed wholly at one side of the body, the

' free ends of said arms having each a studengaging portion in close proximity to the body, said arms being freely flexible away from the body by the stud when the latter is being inserted but arranged to contact with and be supported by the'body on the application of stress tending to withdraw receiving opening, and a plurality of resilient S-shaped arms integral with the body and extending from the periphery thereof, said arms being arranged wholly on one side of the body and converging toward said opening, each arm including a shank portion adapted to spring towa'rdthe body, and a aw portion carried by the free end of the shank portion and projecting-into the path of the stud and away from the body, said arms being freely flexible away from the body by the stud but arranged to contact with and be supported by the body on the application of stress tending to withdraw the stud member from the socket member.

5. A socket member of a snap fastener, composed of a concavo-convex body having a central stud-receiving opening and a plurality of resilient S-shaped arms integral with the body and extending from the periphery thereof, said arms being arranged wholly at the concave side of the body and converging toward said opening, each arm including a shank portion adapted to spring toward the body, and a curved jaw portion carried bv the free end of the shank portion and projecting into the path of the stud and away from the body, said arms being freely flexible away from the body by the stud when the latter is being inserted but arranged to contact 'with the body and be supported by the latter on the application of stress tending to withdraw the stud member from the socket member, the stud-reeeiving opening being unobstructed at the convex side of the body.

In testimony whereof I have affixed my signature.

IMMANUEL PFEIFFER, JR. 

